386406738 has 24 divisors (see below), whose sum is σ = 837600348. Its totient is φ = 128742912.

The previous prime is 386406733. The next prime is 386406751. The reversal of 386406738 is 837604683.

It can be written as a sum of positive squares in 2 ways, for example, as 384826689 + 1580049 = 19617^2 + 1257^2 .

It is a junction number, because it is equal to n+sod(n) for n = 386406693 and 386406702.

It is not an unprimeable number, because it can be changed into a prime (386406733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54570 + ... + 61242.

Almost surely, 2^386406738 is an apocalyptic number.

386406738 is an abundant number, since it is smaller than the sum of its proper divisors (451193610).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

386406738 is a wasteful number, since it uses less digits than its factorization.

386406738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9898 (or 9895 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The square root of 386406738 is about 19657.2311885474. The cubic root of 386406738 is about 728.3635941372.

The spelling of 386406738 in words is "three hundred eighty-six million, four hundred six thousand, seven hundred thirty-eight".